115111105 has 4 divisors (see below), whose sum is σ = 138133332. Its totient is φ = 92088880.

The previous prime is 115111103. The next prime is 115111111. The reversal of 115111105 is 501111511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44836416 + 70274689 = 6696^2 + 8383^2 .

It is not a de Polignac number, because 115111105 - 2¹ = 115111103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115111103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11511106 + ... + 11511115.

It is an arithmetic number, because the mean of its divisors is an integer number (34533333).

Almost surely, 2^115111105 is an apocalyptic number.

It is an amenable number.

115111105 is a deficient number, since it is larger than the sum of its proper divisors (23022227).

115111105 is an equidigital number, since it uses as much as digits as its factorization.

115111105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23022226.

The product of its (nonzero) digits is 25, while the sum is 16.

The square root of 115111105 is about 10728.9843414929. The cubic root of 115111105 is about 486.4509706462.

Adding to 115111105 its reverse (501111511), we get a palindrome (616222616).

The spelling of 115111105 in words is "one hundred fifteen million, one hundred eleven thousand, one hundred five".